public class SolutionInterview16_9 {

    public SolutionInterview16_9() {

    }

    public int minus(int a, int b) {
        return a-b;
    }

    public int multiply(int a, int b) {
        return a*b;
    }

    public int divide(int a, int b) {
        return a/b;
    }

    public static void main(String[] args) {
        SolutionInterview16_9 solutionInterview16_9=new SolutionInterview16_9();
        System.out.println(solutionInterview16_9.minus(1, 2));
        System.out.println(solutionInterview16_9.multiply(3, 4));
        System.out.println(solutionInterview16_9.divide(5, -2));
    }
}
